#define LED4 12
#define LED5 13 

void setup() {
  // put your setup code here, to run once:
  pinMode(LED4, OUTPUT);
  pinMode(LED5, OUTPUT);
  
}

void loop() {
  // put your main code here, to run repeatedly:
  digitalWrite(LED4, HIGH);
  delay(500);
  digitalWrite(LED4, LOW);
  
  digitalWrite(LED5, HIGH);
  delay(500);
  digitalWrite(LED5, LOW);
  delay(500);
}
